Ingredients:

2 packets starbucks via columbia {i've said it before and i'll say it again, if you're supposed to cook with wine you'd drink, shouldn't that be the same for coffee? }
3/4 cup coffee flavored liqueur
4 large egg whites
1 1/2 cups sugar
3 sticks unsalted butter, room temperature

Instructions:

In a small bowl, combine the starbucks via with the coffee liqueur and stir until disolved, set aside.  in a heatproof bowl set over a pan of simmering water, whisk together the egg whites and sugar until the sugar is dissolved, and the mixture is warm to the touch, about 2-3 minutes.

In the bowl of an electric mixer fitted with the whisk, beat the egg white/sugar mixture on high speed until sift peaks have formed, about 6 minutes.

Switch to the paddle attachment and with the mixture on medium to low speed, add the butter a few tablespoons at a time.  beating well after each addition.  continue beating until smooth and fluffy.  {the frosting might appear to separate but keep beating until smooth.}  with the mixer on low speed, add the coffee and liqueur mixture until smooth.  {again the frosting might appear to separate, especially at this addition, but keep beating until smooth.}  beat on the lowest speed to remove any air bubbles, about 2 minutes.